Download a PCS 7 NetPro AS–OS Connection to an OS Station
To download NetPro communication for a PCS 7 OS, first create the OS–AS connection in NetPro by selecting the WinCC application and its CPU partner, then download the relevant station/connection configuration using the workflow for the installed PCS 7 version. An OS connection is not created merely because a CP443-1 appears under accessible nodes. Verify the PG/PC interface and OS PC Station configuration before downloading.
Table of Contents
- Prerequisites
- Create the AS–OS Connection in NetPro
- Download the Configuration
- Check the PG/PC Interface and Target
- Verification
- Limitations and Operational Precautions
- Engineer FAQ
- Technical References
- Related Articles
- Related Tags
Prerequisites
The source describes PCS 7 with a CP443-1 and ISO Industrial Ethernet. Ensure SIMATIC Manager contains the OS PC Station and AS, with the relevant CPs configured in HW Config. Back up the multiproject and confirm the target PC Station is configured.
Create the AS–OS Connection in NetPro
The PCS 7 V9.0 Operator Station Configuration Manual says configure PC-station communication in NetPro and start with the OS. Select the WinCC application for the OS, insert a new connection, and select the CPU whose data the OS must display. Verify the configured partner and connection properties against the actual topology.
Download the Configuration
Do not treat “accessible nodes” as proof that an AS–OS connection exists. Siemens' later V10.0 Compendium distinguishes initial station configuration from connection updates: initial selected-station downloads may require AS STOP; new or modified S7 connections can be downloaded as selected connections while AS is RUN; PC stations use selected-station download, and an OS compile/download is needed if AS–OS connections change. Check the exact PCS 7 release before applying this sequence.
Check the PG/PC Interface and Target
Confirm the engineering station's PG/PC interface is set to the intended local/network adapter for the configured path. Verify the target OS PC Station and component configuration before download. A CP443-1 appearing in Accessible Nodes proves discovery at that interface, not that the configured OS connection is complete.
Verification
Compile/save NetPro and confirm configuration status is valid. Download the applicable station/connection configuration using the version-matched procedure. Compile and download the OS when the AS–OS connection changed, then verify runtime communication from the OS to the intended CPU.
Limitations and Operational Precautions
The V9.0 manual describes connection creation; detailed download distinctions cited here are from PCS 7 V10.0 and must be checked against V9.0/library version. Initial station download can require STOP; connection changes can interrupt communications. Coordinate with operations and preserve rollback data.
Engineer FAQ
Where is the OS–AS connection configured? In NetPro, select the WinCC application for the OS and create a connection to the CPU.
What must exist first? The SIMATIC Manager project must contain the OS and AS stations and configured CPs.
What does PCS 7 V9.0 documentation say about OS connections? It says configure connections for PC stations in NetPro, beginning at the OS.
How are new or modified S7 connections downloaded? The cited V10.0 Compendium says select the connection and download selected connections; applicability must be checked for the installed version.
Can a PC station receive a selected-connection download? The cited V10.0 Compendium says only selected stations can be downloaded for a PC station; the OS must be compiled/downloaded if AS–OS connections change.
Does finding a CP443-1 in accessible nodes prove the OS is configured? No; accessible-node discovery does not prove the NetPro AS–OS relationship is correctly created.
Why check PG/PC interface? The source reply recommends configuring PC access before downloading; check the proper interface for the engineering station.
Could this require STOP? Initial selected-station downloads may have different operating requirements; follow exact version documentation and operational plan.
What verifies the connection? Confirm NetPro reports a valid configuration, OS compile/download completes and the runtime connection is healthy.
When should the connection not be altered live? When a download could interrupt communications or affect production; use change control and schedule.
Technical References
- Siemens, Operator Station (V9.0), Configuration Manual, section 6.2, configuring network connections for an OS: https://support.industry.siemens.com/cs/attachments/109746516/ps7phosb_en-US.pdf
- Siemens, PCS 7 Compendium Part A (V10.0), section 8.3, downloading connections: https://support.industry.siemens.com/cs/attachments/109988276/pcs7_compendium_part_a_en-US_en-US.pdf?download=true